Nut-lock.



' A. M. PONKEY.

NUT LOCK. APPLICATION 111.1111 11111131. 1910.

985,059. I Patented 11111.21, 1911.

e awue/wtoz WWW fllberlMPon/(su ALBERT M. PONKEY, OF DETROIT, MICHIGAN,

ASSIGNOR OF ONE-HALF T0 CHARLES ENDRISS, 015 DETROIT, MICHIGAN.

NUT-LOCK.

Specification bf Letters Patent.

Patented Feb. 21, 1911.

Application filed May 31, 1910. Serial No. 564,189.

To all whom it may concern:

Be it known that I, ALBERT M. PONKEY, a

citizen of the United States of America, re-

siding at Detroit, in the county of Wayne and State of Michigan, haveinvented cer tam new and useful Improvements in Nut-,

Locks of which the following is a specification, reference being hadtherein to the accompanying drawing.

his invention relates to nut and bolt locks, and the principal object ofthe same is to provide a novel nut which is provided with means for thereception of a locking device that will automatically engage the nut anda bolt so that reverse rotation of said nut is prevent-ed.

In carrying out the objects of the invention generally stated above itwill be understood, ofcourse, that the essential features thereof arenecessarily susceptible of changes in details and structuralarrangements, one preferred and practical embodiment of which is shownin the accompanying drawings, wherein Figure l is a perspective view ofthe improved nut lock. Fig. 2 is a View in longitudinal section showingthe not locked to a bolt. Fig. 3 is a transverse sectional view thereof;Fig. 4 is an enlarged fragmentary longitudinal sectional View.

Referring to said accompanying drawings, it will be seen that theimproved nut and bolt lock comprises primarily a nut 1 that is providedwith the usual central threaded opening 2, said opening being surroundedby the count'erbored opening 3 on the top side of the nut, thesurrounding wall of opening 3 being in the form of an annular groove 4which is preferably roughened or serrated. v

The locking device which is carried by the nut 1, is formed of a singlelength of rewith a silient rod metal bent into a substantiallyring-shaped body 5 that is seated in the groove 4. One end of said bodyis inturned provide a dog 6 that bites into the threads of a bolt 7 uponwhich nut 1 is mounted. The other end portion of said body is inwardlybowed, as indicated at'8 and bears upon the threads of the bolt 7. Theoutturned pointed end 9 thereof is adapted to bite into the serrated orroughened surface of groove 4.

It will be seen from the foregoing that the counterbored and groovedportion of the nut provides a housing for the locking device 5, sothatthe same cannot become accidentally displaced therefrom, and thatthe biting, ends 6 and 9 of said device will be forced into bindingengagement with the nut and the bolt if reverse rotation of said nut orbolt is attempted.

What I claim as my invention is: I

1. A nut lock comprising a nut provided grooved'seat in one end, and aresilient locking device fitted within said seat and provided saidendsengaging the wall of said groove and the other adapted-to engage a bolt.

2. A device of the character described comprising a nutprovided with acounterbored opening, said opening surrounded by a grooved wall, saidwall being roughened, and a ring-shaped "resilient locking device seatedin said groove and having an outturned pointed end that engages saidwall, and an inturned pointed end adapted 'to engage a bolt.

In testimony whereof I hereunto aflix my signature in presence of twowitnesses.

ALBERT M. PONKEY. 7 W'itnesses:

' MARY ErKLosrER, LOUIS F. LINSEL.

with sharpened ends, one of

